Question

find the value ofvthe following expression

b. 64x^2 - 112xy + 49y^2, when x =1/2,y=-3/2​

Answer 1

64x² - 112xy + 49y², when x =1/2, y=-3/2

Putting values of x and y in 64x² - 112xy + 49y²

We get, 64×(1/2)²-112×1/2×(-3/2)+49×(-3/2)²

64×1/4-112×(-3/4)+49×9/4

16-(112×-3/4)+441/4

16-(-84)+441/4

16+84+441/4

100+441/4

400+441/4

841/4

210.25

Hope it helps you.

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